For me my age of attraction - the age of the boys, in my case, that I am attracted to - has varied wildly over the years. This has mainly been a result of who I've been mixing with. When I've had no contact with younger boys but a lot to do with young adults, I've seen it rising well into the legal range. And even when I was your age, after falling heavily for a 9 year old, a couple of years later I was seriously attracted to a number of the students at the university I was then a part of. So you might find it helpful to spend time away from these young girls and spend more time with your own age group. Of course the heterosexual world has its issues: it's easier to spend time with someone of your own sex than with the opposite without it raising questions. But I'd encourage you to see what you can do - and realise that this MAY be a source of largely resolving the issue for you.